6. Model and solve the following problem in OPL. Plcase report the solution (uase a script file) Your goal is to optimize your profit. Over a 10 week period the demands for your product are 85, 97, 120, 105, 84, 74, 116, 123, 104, 98. The item sells for $50. There is a $500 shipping charge on each order and if you order 150 or fewer items, then each item costs $30. If you order between 150 and 249, then each item costs $27. If you order 250 or more items, then the cost is $24 per item. Each item in inventory costs $5 due to storage space, capital spent, etc. Each item with a shortage (demand exceeds inventory) costs $15 due to a loss of customer satisfaction, these items are never sold. What is your ordering policy